### Home > CCA2 > Chapter 9 > Lesson 9.3.3 > Problem 9-103

North City High School has served the following number of lunches since the beginning of the school year. The data has been sorted.

*9-103 HW eTool*(CPM). Homework Help ✎Number of lunches sold per day

576

584

594

595

603605

606

613

618

630632

636

640

640

652660

661

663

665

666671

671

675

677

678689

695

698

703

721723

738

745

755

774774

785*checksum 24711*What are the mean and standard deviation number of lunches in the sample?

What is the five number summary of the distribution?

Make a relative frequency histogram of the number of lunches served. Use a scale from 560 to 800 lunches, with a bin width of 40 lunches. Sketch the histogram and label the height of each of the bins.

Describe the distribution. Make sure you consider the center, shape, spread, and outliers.

Using your histogram, determine the percent of days on which fewer than 600 lunches were sold.

Using the histogram, estimate the percent of days on which between 600 and 700 lunches were sold.

Use the eTool at the bottom for parts (a) - (c).

The typical number of lunches served is_____.

The shape is _____ and _____.

The standard deviation is about _____ lunches.

There are/are not apparent ouliers.

Use the eTool below for parts (a) - (c).

Click the link at right for the full version of the eTool: *CCA2 9-103 HW eTool*